Truck light bar



FIG. 1 is a rear perspective view of a truck light bar showing my new design, the truck being shown in broken lines for illustrative purposes only;

FIG. 2 is a front perspective view thereof on an enlarged scale;

FIG. 3 is a left side elevational view thereof on an enlarged scale, the right side being a mirror image;

FIG. 4 is a front elevational view thereof on an enlarged scale;

FIG. 5 is a top plan view thereof on an enlarged scale;

FIG. 6 is a rear elevational view thereof on an enlarged scale; and

FIG. 7 is a bottom view thereof on an enlarged scale. 

The ornamental design for a truck light bar, as shown and described. 